1920] Holland, Lepidoptera of the Congo 235 



Like the foregoing, this is a veiy common insect in southern 

 Camei'oon and the valley of the Ogove River. We have in the Museum 

 at Pittsburgh more than one hundred examples, including the slight 

 varietal form named vestalis by Aurivillius, in which the hind margmal 

 band of the secondaries is broader than in the type figured by Mabille, 

 and several specimens in which the white areas of the wings are broadly 

 beautiful straw-yellow. To this yellow form, which has not heretofore 

 been dcscril^ed or figured, I apply the varietal name flava. The type is 

 in the Holland Collection in the Carnegie Museum and, with several 

 cotypes, was taken at Benito, Spanish Guinea, by the late Dr. A. C. Good. 



In this connection I may state that this insect is the one to which 

 the Fabrician name elorea has in the past been applied by authors. The 

 Fabrician description, like many of those given by early authors, is too 

 brief and concise to enable a student to reach a proper conclusion. The 

 only figure of elorea is given by Donovan in the 'Naturalist's Repository,' 

 PI. Liii, in reference to which Aurivillius makes the comment that 

 it may be "species fiditia.''^ I confess that among the hundreds of speci- 

 mens of this genus I have had in my hands I have never found one to 

 agree with Donovan's figure, and that I share in the view of Aurivillius 

 that if it is elorea Fabricius, the species is now probablj^ extinct, if 

 indeed it ever existed. 



Papilionidse 



Pierinae 



Leptosia Hiibner 



(387) 1. Leptosia medusa (Cramer) 



Papilio medusa Cramer, 1777, Pap. Exot., II, p. 86, PL cl, fig. F. 

 Leptosia medusa Aurivillius, 1898, Rhop. ^thiop., p. 387. 



Eight specimens, one taken at Bafwasende in January, one at 

 Gamangui in February, the rest at Medje in July and August. 



(388) la. Leptosia medusa immaculata (Aurivillius) 



Nychilona medusa immaculata Aurivillius, 1895, Ent. Tidskr., XVI, p. 257. 

 Leptosia medusa ab. immaculata Aurivillius, 1910, Seitz, Gross-Schmett., XIII, 

 p. 31, PI. xa. 



Three examples, one taken at Ngayu in April, one at Medje in 

 August, and one at Niangara in November. 



